Illumination device



FIG. 1 is a rear isometric view of an illumination device showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a front view thereof.

The broken lines showing the remainder of the illumination device are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for an illumination device, as shown and described. 